Form chuck into 4-ounce patties, about 3/4 inch thick, with a slight depression in the middle. Season on both sides with salt and freshly ground black pepper.

Dip burgers into beaten egg. Dredge in panko breadcrumbs and set aside.

Heat a griddle over medium high heat 2-3 minutes. Add enough olive oil to generously coat the pan, and add patties. Cook 3 minutes per side for medium rare, 4 minutes for medium, and 5 minutes per side for well done.

Spread cut side of buns with mayo. Add a patty on top of the bottom half of a bun, then top with top half. Serve warm.